Wood surfacing machine



(No Model.) 4 snetsJ-sheen 1. W. H.- GRAY. WOOD SURFACING MACHINE.

Patented Dec. 2-8, 1886.

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WOOD SU'RFAOI'NG MACHINE.

Patented Dec 28, 1886.

(No Model.)

4 Sheets-Sheet 3;

WOOD SURFAOINGMAGHINB.

. Patented Dec. 28, 1886.

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(No Model.)

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4 Sheets-Sheet 4. W. H. GRAY.

WOOD SURPAGING MAGHI'NE.

Patented Dec. 28, 1886.

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N. PETERS. Phnlu-Llihograplen wasmngton. D.C.

. features may be embodied in wood-planing or rearward of the platen.

, which carries the lower cutterhead and sys- ,erative positions greatly facilitates access to v "UNITED STAT S WILLIAM H. GRAY, 0E GREEN POINT, BROOKLYN, NEW YORK, ASSIGNOR TO THE GLEN covE MACHINE COMPANY, (LIMITED,) 0E SAME PLAeE' WOOD-SURFACING MACHINE.

SPECIFICATION forming part of Letters Patent No. 355,012, dated December 28, 1886.

Application filed May 15, 1886.

To all whom it may concern:

Be it known that 1, WILLIAM H. GRAY, of Green Point, Brooklyn, in the county of Kings and State of New York, have invented a new and useful Improvement in food Surfacing or Planing Machines, of which the following is a specification.

My invention, although all or some of its machines generally, is particularly intended for surfacing-machines in which an upper cutter-head and upper system of feed-rolls are supported by a main frame, and a lower cut-terhead and lower system of feed-rolls are sup-- ported by a vertically-movable lower frame. In such machines the lower cutter-head is frequently near the rear end of the machine, from which the lumber issues, and has arranged above it a platen to hold the lumber against the cutter-head, and there is afeed-roll beyond The removal'of this upper platen and feed-roll from their opthe lower cutter-head for the purpose of securing and adjusting the cutters or knives thereon; and onefeature ofmy invention consists in a novel construction and combination of parts whereby the upper platen and adjacent feed-roller, either or both of them, may be moved upward and downward and held in operative position. The lower movable frame tem of feed-rollers is frequently raised and lowered by means of screws and nuts at four points near the corners of the said movable frame, said screws and nuts serving to connect the movable frame with the fixed frame of the machine.

Another feature of my invention consists in a novel combination of the. screws and nuts with the main frame and lower movable frame, whereby the screws are prevented from binding in the nuts and are enabled to adjust themselves into true alignment with the screws to insure the easy adjustment of the lower movable frame. The several combinations which areincluded in my invention are hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is'a machine embodying my invention.

a longitudinal vertical section thereof.

side elevation of a wood surfacing or planing Serial No. 202,239. (No model.)

Fig. 2 is Fig.

3 is an end elevation, partly in transverse section, looking at the rear end of the machine, or toward that end from which the lumber issues; and'Fig. 4 is a plan of the machine.

Similar letters of'reference designate corresponding partsin all the figures.

A designates the main frame of the machine, which-may be constructed in several parts suitably connected together, and B designates a movable lower frame, which may be adjusted upward and downward within the main frame by meanshereinafter described,and over which the lumber is fed through the machine.

In the upper portion of the main frame is an upper cutter-head, O, and in the verticallymovable frame B is a lower cutter-head, C. Arranged opposite these cutter-heads are plat- 7o ens or a bed, D, and a platen, D, as best shown in Fig. 2, the bed I) being supported by the movable lower frame, B, opposite the upper cutter-head, O, and the platen D being sup ported opposite the lower cutter-head, O."

i In order to properly feed forward the lumher through the maehiue,I have represented upper feed-rolls E E E, which are supported at the upper portion of the main frame, and I have also represented lower feed-rolls F F, as

supported by the movable lower frame, B.

These rolls may, most or all of them,be geared together,so as to positively drive them by gearing which is well known in machines of this class, and of which no particular description is here necessary. I would here remarl:,however, that upon the upper feed-roll E is a gear-wheel, 6, upon the upper feed-roll E is a gear-wheel, c, which gears into and receives motion through an intermediate pinion, e (shown in Fig. 4, and by dotted lines in Figs.

1 and 2,) and upon the lower feed-roll F is a geaI'-\vheel, 6 I have particularly described these several gear-wheels in order that my mechanism for transmitting motion from the upper system of feed-rolls to the lower system carried by the movable frame 13, and which I 'hereinafter describe, may be clearly under stood.

In order to afford facility of access to the too other purpose, it is advantageous to have the upper platen, D, and the upper feed-roll E removable from their operative position,which is shown in Fig. 2 in full lines. T accomplish this result I do not mount the platen D and the roller E directly in the main frame, but Isupport them in a movable upper frame, G, which is hinged at b, so that it may be swung upward in a plane transverse to the length of the platen D and the roll E, as is shown by dotted lines in Fig. 2. The boxes of when it is swung down to the position shown in Fig. 1, I employ screws H, which are fitted to swivel-nuts h, and which serve to connect the hinged upper frame, G, with the main frame A. In this example of my invention the screws H are fitted to bearings h, which are swiveled or pivotally connected with the main frame A. Consequently when these screws are turned, the hinged upper frame, G, will be swung upward, as shown by dotted lines in Fig. 2, and the screws will assume an oblique position, as also shown in Fig. 2. The pivoted or swiveled nuts and bearings h h provide for the oblique position of the screws H, without the binding of the screws in said nuts or bearings. A single screw at one side of the hinged frame G might sufiice for the purpose; but I prefer to employ screws H at opposite sides of said frame, as best shown in Fig. 3, and such screws may be connected and operated simultaneously by a cross-shaft, h, and bevel-gears h From the above description it will be seen that the screws H not only serve to raise the screws being at or near the other end of said movable lower frame. These screws are connected by cross and longitudinal shafts d and bevel-wheels (1, so that all may be operated simultaneously, and by means of a shaft, d, which extends to the front of the machine,and is there provided with a crank-handle, d, the screws may all be turned in unison. These screws I engage nuts I, on which the movable lower frame, B, is supported. As here shown, this lower frame consists of parallel side bars or portions, b", extending lengthwise of the machine, and cross bars or portions b connecting said side portions, b near opposite ends. The cross-bars b have in them sockets or circular bearers b, which receive the nuts I, and these nuts have projecting studs or trunnions b which are fitted to recesses or concave notches 12 in the cross portions 11 of the lower frame. This gives the nuts I a swiveled or pivoted connection with the lower frame, B, and enables the nuts to adaptthemselves properly to their screws and avoids any binding or canting ofthe screws and nuts.

I will now describe how power is transmitted from the upper system of feed-rolls E,&c., to the lower system of feed-rolls F, &c., without interference from the vertical adjustment of the lower frame, B, carrying said feed-rolls. J designates the main shaft of the machine, and J is a counter-shaft which receives motion from the main shaft J by a pair of cone pulleys or drums, 1', (best shown in Figsl and 4,) and which are connected by a belt, 1'. From a pulley on the shaft J motion is transmitted by a belt, i to a pulley,t' ,which is comprised in the upper system of feed gearing, and through wheels and pinions, which it is not necessary to particularly describe, and which may be combined,as is usual in machines ofthis character,motion is transmitted from the pulley t to the upper feed'roll, E. From the gear-wheel e of this upper feed-roll E motion is transmitted through a train of wheels to the gear-wheel e on the lower feed-roll F. This train of wheel or expansion gears is here represented as composed of two wheels, 6 0 which gear with cach'other and respectively with the wheels 6 e. The wheels e e are journaled upon studs carried by a bar, e", which is fulcrumed or pivoted concentric with the wheel 6 and the upper end of this bar is connected by a link, 6 to hold the wheel 6 in engagement with the wheel 0. To additionally support the wheels 6 e, I have represented their ICC centers as connected bya link or bar, 6, ar- I ranged on the side of the wheels opposite the long bar a. By this arrangement and combination of expansion-gears motion is transmit ted from the wheel 6 on the upper feed-roll to the wheel 6 on the lower feed-roll without inteference from the vertical movement or adjustment of the frame B and the'lower feedrolls supported by it.

The upper cutter-head, G, is, as here represented, driven by belts C from pulleys J 011 the shaft J, and one of these belts passes over and bears with frictional contact on a second belt, C driving around a pulley, J, and from thence to a pulley on a journal of the lower cutter-head, G. The belt O is driven by frictional engagement of the belt 0 with it, as has been before done in planing-machines, and it will be seen that as the movable frame B, carrying the lower cutter-head, G, is raised or lowered the tension of the belt 0" will be are journaled in a swinging frame, 1

varied unless some means be employed to preserve a substantially uniform tension in said belt. The means for this purpose, which is best represented in Fig. 1, consists of two pulleys, ZZ, under and over which one member or portion of the belt 0 passes, and which From the frame I an arm, Z, extends upward, and has connected with it an operating and locking bar, 1*, toothed or notched at its under side to engage a tooth or detent, Z When it is desired to swing the frame Z so as to adjust the rollers 11 to produce more or less deflection of the belt 0 as it passes between them, the rod or bar 1* may be lifted off from the tooth Z and shoved back or drawn forward to swing the frame I". WVhen the rod or bar Z is released, it is supported by the tooth or detent Z and its notches come into automatic engagement with said tooth or detent.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a wood-planing machine, the combination, with the main frame and an upper platen, ofa frame carrying the upper vplaten and hinged to swing upward in a plane transverse to the length of the platen and a screw or screws and swiveled nut or nuts connecting the main frame and hinged frame, and by which the hinged frame may be moved and held in operative position, substantially as herein described. a

2. The combination, with the main frame and an upper feed or bearing roll, of a frame carrying the said roll and hinged to swing upward in a plane transverse to the length of the roll, and a screw or screws and swiveled nut or nuts connecting the hinged frame and main frame, and by which the hinged frame may be moved and held in position, substantially as herein described.

3. The combination, with a main frame and an upper frame carrying an upper platen and feed-roll, either or both, and hinged to swing upward in a plane transverse to the length of the platen or roll, of swiveled bearings on the hinged frame and swiveled nuts on the main frame, screws journaled in the swiveled bearings and fitting the nuts, and gearing connecting the screws for turning them simultaneously, substantially as herein described.

4. The combination, with a mainframe supporting an upper cutter-head and system of feed-r0lls, of a movable lower frame supporting a cutter-head and system of feed-rolls, upright screws 1, journaled in the main frame and arranged in pairs at opposite ends of the movable lower frame, cross and longitudinal shafts d, and bevel-gears d connecting a the screws and nuts I, having trunnions b which are transverse to the axes of the screws, and which are received in' recesses or open bear- ,ings on the under side of the movable frame, substantially as herein described.

5. The combination, with a mainframe sup porting an upper cutter-head and system of feed-rolls, of a movable lower frame supporting a cutter-head and system of feed-rolls, upright screws I, journaled in the main frame and arranged in pairs at opposite ends of the movable lower frame, cross and longitudinal shafts d, and bevel-gears (1, connecting the screws, a shaft, (1 extending to the the front of the machine and geared with the screws and their connecting-shafts, and nuts I, having the trunnions If, which are transverse to the axes of the screws,and which are received in recesses or open bearings 0n the under side of the movable lower frame, substantially as herein described.

\VM. H. GRAY.

Witnesses:

G. HALL, FREDK. HAYNES, 

